The CIA has decided to give people a look into the agency’s alien investigations from the 1940s and 1950s. The CIA declassified hundreds of documents in 1978 detailing the their investigations into Unidentified Flying Objects (UFOs). Available on its website, the documents could be interesting for both skeptics and believers. They could be used by X-Files character Agent Fox Mulder to try and persuade others of the existence of extraterrestrial activity. On the other hand, some other documents could be used by Mulder's skeptical partner, Agent Dana Scully, in order to prove there is a scientific explanation for UFO sightings.

The files show flying saucers reported in 1952 over East Germany, Spain, North Africa, and Belgian Congo uranium mines.

Links to a survey of flying saucer reports from 1952 and the minutes of the CIA Branch Chief's meeting on UFOs from August 1952 are also available.

The agency also offers a complete and searchable library of declassified investigations from the 1940s and 1950s.

CIA also has an article on how to investigate a flying saucer.